Changes in whistle parameters of two common bottlenose dolphin ecotypes as a result of the physical presence of the research vessel.

ABSTRACT: In the presence of vessels, dolphins have been found to change their habitat, behavior, group composition and whistle repertoire. The modification of the whistle parameters is generally considered to be a response to the engine noise. Little is known about the impact of the physical presence of vessels on dolphin acoustics. Whistle parameters of the coastal and oceanic ecotypes of common bottlenose dolphins in La Paz Bay, Mexico, were measured after the approach of the research vessel and its engine shutdown. Recordings of 10 min were made immediately after turning off the engine. For analysis, these recordings were divided from minute 0 to minute 5, and from minute 5:01 to minute 10. The whistles of the oceanic ecotype showed higher maximum, minimum and peak frequency in the second time i

SUBMITTER: Antichi S 

PROVIDER: S-EPMC9549881 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature